Where does gravity come from?

Answer 1

That is a good question, which demonstrates curiosity!

First you have to ask yourself what is gravity?

According to Newton's law of universal gravitation, gravity is a force that is proportional to the product of two masses and inversely proportional to the square of the distance between the point masses.
Or F(gravity) =G m1m2/r^2

According to Einstein all mass disturbs the space time continuum by "pulling" on it (curving space) the bigger the mass (not necessarily size but weight and density) the bigger the "pull" on the "fabrics" of space! That raises many more questions since space and time are part of one another, so gravity not only pulls on space but disrupts time by doing so!

Imagine space time as a piece of fabric, imagine mass as dots pulling the fabric in from all sides, that's about all I can think of, from what I've read about it.

There are also wiki links about virtual particles called gravitons and other links about gravitational waves that might shed some light on your question:

http://en.wikipedia.org/wiki/Graviton

http://en.wikipedia.org/wiki/Gravitational_wave


Hope it helped:)

Answer 2

The gravity fairy.

Seriously, that's as good an answer as any. Nobody can tell you WHY gravity happens. We can only describe what happens (a la Newton's gravitational laws or Einstein's general relativity).

As a scientist, you learn to avoid asking WHY questions and focus on the WHAT--what will happen if you do A or B or C (maybe with a little HOW mixed in). You try to create the simplest possible models that predict all your observations (like Newton's or Einstein's gravity laws).

Answer 3

In Newton's time, a gravity field was there whenever there is mass, and they didn't know why. Today, according to the general theory of relativity, gravity is the warping of space-time as caused by the presence of a mass.

Answer 4

Gravity is an always-attractive force that acts between particles of matter. (It can also act between quantities of energy!) More technically, it has an infinite range through space, and weakens as the inverse-square of the distance between bodies.

Use the site, http://www.pbs.org/wgbh/nova/elegant/ if you have more questions on this topic.

Answer 5

Gravity is an intrinsic quality of mass.
.

Answer 6

It always happens when masses are present. It can be explained geometrically but there is no accepted theory of the mechanism that causes it at quantum levels.
AKA we dont know =P

Answer 7

It always happens when masses are present. It can be explained geometrically but there is no accepted theory of the mechanism that causes it at quantum levels.

Answer 8

Newton